I had my doubts but it's worked really well. There are clamps on the corners and springs on each end so the connection is secure despite my tank (like many tanks) being not exactly perfect dimensions. I wish they made it for a 20 gallon, not just a 10. The wire they walk on is thin and seems a bit sharp so I use wood planks for them to walk on/ climb up and down. There's only an access at the top, which means some gymnastics when moving items around the cage. Overall I'm really happy with this purchase.